Multi-Focused Fine-Grained Security Framework

Patent metadata

Field	Value
Publication number	US-2016308902-A1
Application number	US-201514722410-A
Country	US
Kind code	A1
Filing date	May 27, 2015
Priority date	Apr 16, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

An approach is provided in which a knowledge manager generates a knowledge structure that includes security annotation tokens and term tokens. Each of the security annotation tokens are stored in a parallel field and align to at least one of the term tokens. The knowledge manager matches security policies corresponding to a search request to one or more of the security annotation tokens and, in turn, generates search results based upon obfuscation of one or more of the term tokens aligned to the matched security annotation tokens.

First claim

1 . A method implemented by an information handling system that includes a memory and a processor, the method comprising:
creating a knowledge structure that includes a plurality of security annotation tokens and a plurality of term tokens, wherein each of the plurality of security annotation tokens are stored in at least one of a plurality of parallel fields that correspond to at least one of the plurality of term tokens; matching one or more security policies corresponding to a search request to one or more of the plurality of security annotation tokens; and generating one or more answers to the search request based upon obfuscation of a subset of the plurality of term tokens that each correspond to at least one of the matched one or more security annotation tokens.

2 . The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a search restriction policy corresponding to the matched one or more security annotation tokens; and
omitting the subset of term tokens during a search of the knowledge base.

3 . The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a scoring restriction policy corresponding to the matched one or more security annotation tokens; and
omitting the subset of term tokens during a scoring of one or more search results corresponding to the one or more answers.

4 . The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a passage authorization security policy corresponding to the matched one or more security annotation tokens; and
deleting one or more candidate answers based upon the passage authorization security policy.

5 . The method of claim 1 further comprising:
determining that at least one of the one or more security policies is a visualization security policy corresponding to the matched one or more security annotation tokens; and
displaying a modified one of the one or more answers that masks one or more of the subset of term tokens.

6 . The method of claim 5 further comprising:
replacing the masked one or more term tokens with one or more security warning messages.

7 . The method of claim 1 wherein, prior to the creation of the knowledge structure, the method further comprises:
assigning a plurality of security annotation tags to a document based upon one or more document properties of the document;
generating the plurality of security annotation tokens from the plurality of security annotation tags; and
generating the plurality of term tokens from a plurality of terms included in the document.

8 . A method implemented by an information handling system that includes a memory and a processor, the method comprising:
receiving a search request initiated by a user; identifying one or more user authorizations corresponding to the user; and generating one or more answers of the search request based upon the one or more user authorizations, wherein the generation of the one or more answers comprises:
creating one or more preliminary search results from searching a knowledge structure utilizing one or more search restriction policies corresponding to the one or more user authorizations, wherein the knowledge structure includes a plurality of security annotation tokens and a plurality of term tokens, each of the plurality of security annotation tokens stored in at least one of a plurality of parallel fields corresponding to at least one of the plurality of term tokens;
scoring the one or more preliminary search results based upon one or more scoring security policies corresponding to the one or more user authorizations, resulting in one or more scored preliminary search results; and
generating the one or more answers from the scored preliminary search results by removing one or more passages from the scored preliminary search results based upon one or more passage authorization security policies corresponding to the one or more user authorizations.

9 . The method of claim 8 further comprising:
displaying a modified version of at least one of the one or more answers, wherein the modified version of the one or more answers obfuscates one or more of the plurality of term tokens whose corresponding security annotation token matches at least one or more visualization security policies corresponding to the one or more user authorizations.

Assignees

• IBM

Inventors

• Beamon Bridget B
• Debroni Bradley M
• Filoti Octavian F
• Kyle Bryan J
• Nolan Christopher M

Classifications

• G06F21/604 Primary

  Tools and structures for managing or administering access control systems · CPC title

• G06F2221/2125

  Just-in-time application of countermeasures, e.g., on-the-fly decryption, just-in-time obfuscation or de-obfuscation · CPC title

• G06F21/6227 Primary

  where protection concerns the structure of data, e.g. records, types, queries · CPC title

• G06F21/6254

  by anonymising data, e.g. decorrelating personal data from the owner's identification · CPC title

• H04L63/08

  for authentication of entities (cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32) · CPC title